bag ley



anni f @sus I k E. A. BAGLEY, OI" WORCESTER, li/IASSACHUSETTS.

Letters Patent No. 88,262, dated .March 30, 1869.

IMPROVEMENT EN SCREW-MACHINES.

The Schedule refined to in these Letters Patent and making part of the same.

Know all Iman by tllcsc prescrits:

Iliat l, E. A, BAGLEY, ot the city and 'count-y of Worcester, and Common wealth of Massachusetts, have invented certain new and useful Improvements in Machines for Making Screws; and I do herebyv declare that the following is a full, clear, and exactdescription ofthe saine, reference being had to the accompanying drawings forming a partot" this specification, in which- Iiignre l represents a. side view of a machine for inakiiig screws, with my inipi'oii'einents applied thereto;

Figure 2 represents a top or plan view;

Figure 3 represents a section on line A. B, tig. 1 and Figure 4 represents a section ofa part ofthe machine when made in a somewhat different inannerfroin-tlie machine shown in iigs. '1, 2, and Li.

'Io enablethose skilled in the art to which my invention belongs, to make and use the saine, l will proceed to describe it more in detail. v

In the drawings, the iiiain fraiiie is lettered A, upon 'the front end of which is mounted the usual hollow head B; while, upon tue rear of frame A, is mounted the carriage, or frame-C, having bearings, or boxes D D, through wliieli the sliding shaft E passes, and which shaft, or spindle E can be moved back and foith freely in said boxes, by means ofthe hand-lever F, which is hinged to the frame, or carriage C, and also to the swivel-piece E', fastened, or secured to the rear end of spindle E.

Upon the iront end of the spindle E, is secured the disk G, which is provided, in this instance, with a series oflioles a, in which to fasten the tools.

Near theI centre ofthe spindle E, is fastened the holding-plate K, with notches 11. The latterare made to fit. the stationary tongue H, of t-lie piece I, fastened to the frame, or carriage. C.

'Ihe holes a are so made as to be on a line with the centre, or hole iii the head B, when disk G is turned around to bring the holes a. to the front side of the machine. (b ee dotted lines in tig` 3, showing the rela.- tive positions of the pai/ts.)

The operation *is as follows: A

Therod, or bar to be worked up iito screws, is passed in through the hole in the head B, iiutil a suliicient length of rod, oi" bar, to form the desired screw, projects from the inner end oft-he head, when the rod is fastened to the headby the usual devices, and a proper niotiou yis then imparted to head B, by belts running upon the cone-pulleys J. A,

The operator' nw nieves the disk G, ii the holes a of-wliicl-i the proper tools have been fastened, orsecured, so kas to bringtlie'tirst t-ool tube used on a line withl the und of blank liar, orvrod inthe head B.V

` Spindle' E is now nioil'ed toi-ward by means o fthe leverll; the holding-plate, or device K, shaft, orspiiidle E, and ooldisk G, being held iioin turning by reason oft-he tongue H' fitting one ot' the notches b', in the holding plete K, as shown iii dark lines in the drawings.

The notches in the holding-plate K, are so made and arranged as to hold the spindle in proper posit-ion to bringl the tools iii exact positions to act upon the end of the blank bar, or rod, when the spindle I'l is moved forward, as before explained.

After onetool has been used sufficiently, the operator lmoves lever F back, thereby moving the spindle E, tooldisk G, and holding-plate K, back also; all as shown in red lilies in the drawings.

Ihe holding-plate K is now turned, to bring a new tool in position for action lon the blank, when the parts areagaiii moved forward, as before explained, and the operation is repeated until the screw has been coinpleted, ready to beciit from the bai', when itis severed by a cutting-device, not shown iii the drawings, but. which is in coni'rnoii use, and therefore requires no further description.

After the finished screw, or holt has been cut oli', vthe blank bar, or rod, is moved forward a suiticient distance to forni another screw, or bolt, and the operation is re.-

. peated.

1t will be obsived thatany number oftools, together with the necessary dies for making the screw, or bolt;l canbe attached to the disk G before the operation coin-l inences, and then the operator can bring them into aetion, one after the other, in a very quick and expeditious manner, the tools being held iii a true and proper position while being forced up against the end of the blank bar, or rod, by ine-ans of the holding-plate K and tongue H.

In lieu of a notched holding-plate, K, a many-sided plate, L, may be used, as indicated in fig. 4.

In this case, a pla-ne surface, or surfaces C, are einployed to hold the plate L which is to be fastened to the spindle E.

As a great number of ditierent modes, or devices, can beeniployed for holding the plate K, without departing from the principle of iny invention, I do notlimit my' invention to any particular mode. ,I p p Having described my improved'machine for making`4 screws and bolts,

vVhat I claim therein as new, and of my invention.v

and desire to secure by Letters Patent, ,is-

BL-A. BAGLEY. 

